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General Discussion
School me on the GM 8.1
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<blockquote data-quote="altfuel1991" data-source="post: 587011" data-attributes="member: 1211"><p>If you are getting this kind of mileage something is wrong. I am a Workhorse dealer and they used these engines in the motor home chassis for about 10 years. The 28' rv's(14-16K gvw) got around 10-12 mpg and the 38' motor homes(22000gvw) are getting 6-8 mpg.</p><p>We have installed header systems and free flowing mufflers and picked up one mpg as an average. Getting those engines where they can breath really wakes them up. We have seen more issues with knock sensors causing poor mileage than anything else.</p></blockquote><p></p>
[QUOTE="altfuel1991, post: 587011, member: 1211"] If you are getting this kind of mileage something is wrong. I am a Workhorse dealer and they used these engines in the motor home chassis for about 10 years. The 28' rv's(14-16K gvw) got around 10-12 mpg and the 38' motor homes(22000gvw) are getting 6-8 mpg. We have installed header systems and free flowing mufflers and picked up one mpg as an average. Getting those engines where they can breath really wakes them up. We have seen more issues with knock sensors causing poor mileage than anything else. [/QUOTE]
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